Boosting the performance of single-atom catalysts via external electric field polarization

Pan, Yun; Wang, Xinzhu; Zhang, Weiyang; Tang, Lingyu; Mu, Zhangyan; Liu, Cheng; Tian, Bailin; Fei, Muchun; Sun, Yunfei; Su, Huanhuan; Gao, Libo; Wang, Peng; Duan, Xiangfeng; Ma, Jing; Ding, Mengning

doi:10.1038/s41467-022-30766-x

Cited by 70 publications

(53 citation statements)

References 107 publications

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“…It further proved that the CN-F-catalyzed • OH generation was greatly enhanced under the electric field stimulation. All of these results confirmed that the TENG-enabled self-powered electric field can greatly improve the catalytic • OH production of CN-F, which may be attributed to the fact that the electric field promoted the charge transfer rate of the π-conjugated electrons in g-C 3 N 4 , − leading to the enhancement of the π-conjugated electron leaving domains within its layers and the optimization of the mobility of the interlayer carriers, which in turn promotes catalysis …”

Section: Resultsmentioning

confidence: 99%

Self-Driven Electrical Stimulation-Promoted Cancer Catalytic Therapy and Chemotherapy Based on an Implantable Nanofibrous Patch

Zheng

Yao

Zhao

et al. 2023

ACS Appl. Mater. Interfaces

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The efficacy of cancer catalytic therapy is still hindered by the inefficient generation of reactive oxygen species (ROS). Herein, we report a self-driven electrical stimulation-promoted cancer catalytic therapy and chemotherapy by integrating a human-driven triboelectric nanogenerator (TENG) with an implantable and biodegradable nanofibrous patch. The gelatin/polycaprolactone nanofibrous patch incorporates doxorubicin (DOX) and graphitic carbon nitride (g-C3N4), in which the peroxidase (POD)-like activity of g-C3N4 to produce hydroxyl radical (•OH) can be distinctly enhanced by the self-driven electrical stimulation for 4.12-fold, and simultaneously DOX can be released to synergize the therapy, especially under a weakly acidic tumor microenvironment (TME) condition. The in vitro and in vivo experimental results on a mouse breast cancer model demonstrate superior tumor suppression outcome. The self-powered electrical stimulation-enhanced catalytic therapy and chemotherapy via multifunctional nanofibrous patches proposes a new complementary strategy for the catalytic therapy of solid tumors.

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Section: Resultsmentioning

confidence: 99%

Self-Driven Electrical Stimulation-Promoted Cancer Catalytic Therapy and Chemotherapy Based on an Implantable Nanofibrous Patch

Zheng

Yao

Zhao

et al. 2023

ACS Appl. Mater. Interfaces

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“…Finally, applying electromagnetic fields or controlled voltage may offer a promising strategy to tune the orbital configuration and spin state of the metal active sites. 90 Future studies are encouraged to explore these aspects, holding promise for exciting discoveries. ■ CHARACTERIZATION APPROACHES Established Methodologies.…”

Section: ■ Engineering Strategiesmentioning

confidence: 99%

Challenges and Opportunities in Engineering the Electronic Structure of Single-Atom Catalysts

2023

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Controlling the electronic structure of transition-metal single-atom heterogeneous catalysts (SACs) is crucial to unlocking their full potential. The ability to do this with increasing precision offers a rational strategy to optimize processes associated with the adsorption and activation of reactive intermediates, charge transfer dynamics, and light absorption. While several methods have been proposed to alter the electronic characteristics of SACs, such as the oxidation state, band structure, orbital occupancy, and associated spin, the lack of a systematic approach to their application makes it difficult to control their effects. In this Perspective, we examine how the electronic configuration of SACs can be engineered for thermochemical, electrochemical, and photochemical applications, exploring the relationship with their activity, selectivity, and stability. We discuss synthetic and analytical challenges in controlling and discriminating the electronic structure of SACs and possible directions toward closing the gap between computational and experimental efforts. By bringing this topic to the center, we hope to stimulate research to understand, control, and exploit electronic effects in SACs and ultimately spur technological developments.

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“…external electric field, the reaction rate and selectivity of chemical reactions can be adjusted at will [18,28,29,59,61].…”

Section: Orléans Francementioning

confidence: 99%

Electric field - induced catalysis. Laws of field catalysis

Kaplunenko¹,

Kosinov²

2022

InterConf+

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Abstract.The article explores a new type of catalysis - electric field catalysis. The laws of field catalysis are given. The characteristics of the electric field are determined, which set the values of the characteristics of the field catalysis. Field catalysis and field catalyst do not fit into the traditional definition of catalysis and catalyst, which may require a revision of the terminology of catalysis. The field is a more versatile catalyst compared to material catalysts, both in terms of its application to a wider range of chemical reactions, and in the ability to control the rate and selectivity. It is shown that a common donor-acceptor mechanism of catalysis is realized in heterogeneous and field catalysis. Generalized formulas are obtained, from which, as partial results, the laws of heterogeneous and field catalysis follow. New definitions of catalyst and field catalysis are given. The class of material catalysts has been expanded and supplemented with field catalysts.

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Boosting the performance of single-atom catalysts via external electric field polarization

Cited by 70 publications

References 107 publications

Self-Driven Electrical Stimulation-Promoted Cancer Catalytic Therapy and Chemotherapy Based on an Implantable Nanofibrous Patch

Self-Driven Electrical Stimulation-Promoted Cancer Catalytic Therapy and Chemotherapy Based on an Implantable Nanofibrous Patch

Challenges and Opportunities in Engineering the Electronic Structure of Single-Atom Catalysts

Electric field - induced catalysis. Laws of field catalysis

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